Improved burnishing-machine



MIETEN. PHOTO LITHOGRAPN UNITED STATES PATENT OEEi'cE.

D. F. RANDALL, OF HARTFORD, CONNECTICUT, ASSIGN OR, BY MESNE ASSIGNMENTS, TO S. S. ROGERS AND GREEN KENDRICK.

IMPROVED BURNlSHlNG-MACHINE.

Specification forming part of Letters Patent No. 33,558, dated October 2:2, 1861.

T0 LZZ whom, it may concern.'

Be it known that I, DAVID F. RANDALL, of Hartford, county of Hartford, and State of Connecticut, have invented a certain new and useful Improvement in Burnishing-Maehines; and I do hereby declare that the same is described and represented in the following specification and drawings; and to enable others skilled in the art to make and use the same, I will proceed to describe its construction and operation, referring to the drawings, in which the same letters indicate like parts in each of the figures.

The nature of this improvement in burnishing-machines consists in the employment and arrangement of old devices or parts heretofore used separately for other purposes, for the purpose of simplifying and lessening the cost of the machines, and more particularly to produce a uniform pressure of the burnisher upon the variable surface of a spoon, fork, &c., by means of a pattermwhch pattern may be represented by the shape of the upper or lower side of a spoon or fork, Src., corresponding to the one to be burnished, and also for quickly adjusting the action or motion of the burnisher to a given distance (more or less) required to be burnished.

In the accompanying` drawings, A is the table -or frame-work to and upon which the mechanism and the work to be burnished are arranged or secured.

B is the clamp stand or frame for holding the clamps C, by means of which clamps the curve plate or pattern D is adjusted and'held rmly in place.

E is the burnisher-stock, (see Fig. 2,) the upper end of which is made of such length, width, and shape, and secured between clamps or guides in a suitable or proper manner directly under the former or pattern D, so as to insure in its traversing motion a true and uniform action thereof when the power is applied to produce a rapid motion'thereto. Said stock E is chambered, and in the upper end of its chamber c is fitted a follower, a, one end of which takes its bearing against the edge or under surface of the curved plate or pattern D, and the other end against the spring e, being arranged intermediately in the chamber c, between the lower end of the follower a and the upper end of the burnisher-holder cl. The burnisher-holder d is pivoted just below the lower end of the stock E, so as to allow of a variable motion of the burnisherf to the surface on which it works. h are lifting-pins, which serve also to keep the spindle in its proper place and from turning. The object of this arrangement,in combination with the pattern D, is to produce a uniform pressure of the burnisher upon the unequal surface of the article to be burnished, thereby obviating the defect in other machines, where the pressure is greater at some points than at others, and thereby drawing the plate (in plated ware) and starting or causing it lto peel` which defaces and renders it necessary often, in order to remedy the defect, to replate the work.

F isa slotted iiange-crank plate secured on the end of the driving-shaft M, which is arranged and secured in a proper manner underneath the frame-work A.

H is a Z-shaped crank-pin, by the use of which, by turning it a quarter-turn or a halfturn and moving it back and forth in the slot g, and in combination with the slotted lever K and the connections I and J, I am enabled to adjust, limit, or extend the motion of the burnisherf more or less, as desirable, upon the portion of the spoon or fork,&c., that is being burnished.

L is the movable bed upon which the spoon, fork, &c., are secured. Both thearranging, moving, and securing of the spoon, fork, &c., upon the bed L, and also the bed L upon the frame-work A, are produced by any of the ordinary well-known devices.

I have thus endeavored to show the nature, the construction, and the advantage to be derived by the use of this improvement over others now in use, so as to enable others skilled Witnesses:

A. M. WHITE, S. A. KENDALL. 

